Difference between revisions of "JB Analysis"

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Go back [[2nCor_44]]
 
Go back [[2nCor_44]]
[[DAQ]]
 
=Elastic scattering in target=
 
[[Elastic scattering]]
 
  
=DU runs=
+
[[Production_Analysis]]
==TDC spectrum==
 
[[DTC]]
 
 
 
==Target in vs. target out==
 
Gamma peak is revealed by comparing target in and target out runs. 
 
 
 
[[File:Gammas(2).jpg | 950 px]]
 
 
 
==ToF==
 
<math>Neutron TOF=\frac{PMT_{top}+PMT_{bottom}}{2}-t_{\gamma peak}+\gamma_{TOF}</math>
 
 
 
[[target_in_vs_target_out_ToF]]
 
 
 
[[File:ToF.png| 1000 px]]
 
 
 
==Energy==
 
Neutron Energy:   
 
 
 
<math>\frac{1}{2}m_{n}\left(\frac{in}{ns}\right)^2=3.372\left(\frac{42}{t}\right)^2 MeV</math>
 
 
 
Watt distribution: 
 
 
 
<math>Ce^{-aE^'}\sinh\left(\sqrt{bE^'}\right)=0.708 e^{-0.884 E^'}\sinh \left(\sqrt{E^'}\right)</math>
 
 
 
[[File:Watt.jpg|1000 px]]
 
 
 
==Second Hit==
 
Odd TDC spectrum in the second hit:
 
 
 
[[File:Snip20150815 28.png | 1110 px]]
 
 
 
Applying cuts based on TDC difference could help:
 
 
 
[[File:SecondHit.png|1000 px]]
 
 
 
==Opening angles==
 
Uncorrelated distribution from detectors 1-4:
 
 
 
[[File:Snip20150729 3.png|750 px]]
 
 
 
Analyzing 5653446 pulses from DU runs, I was able to find 349 two-neutron events in detectors 1-4.
 
 
 
[[File:CorrOverUncorR.png| 750 px]]
 
 
 
As a test I did the same for gamma events:
 
 
 
[[File:Snip20150815 29.png| 500 px]]
 
  
 +
[[Past_work]]
  
 
Go back [[2nCor_44]]
 
Go back [[2nCor_44]]

Latest revision as of 22:54, 3 September 2017